A Method to Choose Fault Time for Relay Setting Value Verification of Converter Protection in HVDC Systems
Zhu Jia, Li Yinhong, Duan Xianzhong
State Key Laboratory of Advanced Electromagnetic Engineering and Technology chool of Electrical and Electronic Engineering Huazhong University of Science and Technology Wuhan 430074 China
Abstract：The correctness of converter protection setting values can be influenced by the time of fault occurrence. The method of selecting the fault time based on natural periods, which is commonly utilized in engineering practice, has the disadvantage of being sensitive to the time interval. Therefore, this paper proposed a method to choose the time of fault occurrence for converter protection setting value verification, from the point of transient process of electrical variables. Concrete steps to implement the method, and the special time intervals that should be noticed, are given in the paper. It's demonstrated by the simulation results that without compromising the accuracy, workload can be significantly reduced with the proposed method.
朱佳, 李银红, 段献忠. 适用于换流器区保护定值校验的直流系统故障时刻选取方法[J]. 电工技术学报, 2018, 33(7): 1531-1541.
Zhu Jia, Li Yinhong, Duan Xianzhong. A Method to Choose Fault Time for Relay Setting Value Verification of Converter Protection in HVDC Systems. Transactions of China Electrotechnical Society, 2018, 33(7): 1531-1541.
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2018, Vol. 33 
